Answer:
It would be <em>A</em>
Step-by-step explanation:
Answer:
-11
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
x² + 9x + 3
x = -2
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: (-2)² + 9(-2) + 3
- Exponents: 4 + 9(-2) + 3
- Multiply: 4 - 18 + 3
- Subtract: -14 + 3
- Add: -11
Answer:
Step-by-step explanation:
given.quesion.
The length of a rectangle is decreased by 25% and the width has increased by 40% calculate the percentage change in the area of the rectangle
to. find.
area of the rectangle
given
decreased. 25•/•
increased.40•/•
solusion
Length = L
Breadth = B
Original area = L x B
New area = A = L x (1 - 25%) x B x (1 + 40%)
A = L x B x 0.75 x 1.40 = L x B x 1.05
Therefore the area of the rectangle has increased by 5%.
required answer.
5•/•
answer. with. explamation. in. attachment.
hope. it's. helps. you.
Answer:
246 cm^2
Step-by-step explanation:
Area of the rest of cardboard = Area of square - Area of the 4 sectors
Kindly note that at each corner of the cardboard, the angle is 90 degrees
Area of square = L^2 = 20^2 = 400 cm^2
Area of a sector = theta/360 * pi * r^2
Since we have 4 sectors;
Area of sectors =4 * 90/360 * 22/7 * 7 * 7
= 22/7 * 49 = 22 * 7 = 154 cm^2
Area of the remaining part of cardboard = 400 cm^2 - 154 cm^2 = 246 cm^2
(fg)(x) = [f(x)][g(x)]
(fg)(x) = (4x - 5)(3) = 12x - 15
